Toronto has some great architecture to explore.
The Toronto Dominion Center is the six-tower complex designed by the famous architect Mies van der Rohe. Make sure to explore this office development. You will find some great restaurants plus the The Design Exchange in the complex, at 234 Bay St., which features Canadian design. I saw a very good photography exhibit and an interesting collection of chairs and other items by local designers.
I am a big Santiago Calatrava fan, after my trip to Spain in 2012, so I enjoyed seeing his Allen Lambert Galleria atrium at the Brookfield Place across from the TD Bank Tower at 181 Bay St.
Make sure to walk by City Hall, at 100 Queen Street West, designed by Finnish architect Viljo Revell and opened in 1965.
Art Gallery of Ontario: At 317 Dundas Street West, this is a major art museum with over 80,000 works including many by Canadian artists. It also has the largest public collection of sculptures by Henry Moore. The new wing by architect Frank Gehry is really excellent; Toronto is Gehry’s hometown.
Sharp Centre for Design: Near the AGO is the Sharp Centre for Design which has an amazing design by architect Will Alsop. It is part of the campus of the Ontario College of Art and Design (OCAD) which is is Canada’s largest and oldest educational institution for art and design.
Royal Ontario Museum (ROM): Located at 100 Queen’s Park, next to the University of Toronto, is a museum noted for its natural history and world culture exhibitions. The new wing, designed by Daniel Libeskind and opened in 2007, is really outstanding.